#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main() {
    char input;
    while (~scanf(" %c", &input)) {
        if (input == 'a' || input == 'e' || input == 'i' || input == 'o' || input == 'u' || input == 'A' || input == 'E' || input == 'I' || input == 'O' || input == 'U')
            printf("Vowel\n");
        else
            printf("Consonant\n");
    }

    return 0;
}